My Luna Cycles Ludicrous Buzzraw X. Has the new Ludicrous V2 controller and a 52V Dire Wolf battery, Magura MT5 eStop brakes with 220/203 rotors, a custom 4 speed cassette using Surly Single speed cogs, and an Archon Components D1X wireless shifter. Bought the complete bike from Luna and then made my own upgrades to improve the performance and make the bike mine. Very happy with the results.